Home / 87,354.92-131,142.06-72,742.76

Finding the Fourth Proportional to 87,354.92, 131,142.06 and 72,742.76

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Solution

The fourth proportional to 87,354.92, 131,142.06 and 72,742.76 is: 109,205.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,354.92 : 131,142.06 = 72,742.76 : x
  2. Step 2: Convert to fraction form
    87,354.92/131,142.06 = 72,742.76/x
  3. Step 3: Cross multiply
    87,354.92x = 131,142.06 × 72,742.76
  4. Step 4: Simplify right side
    87,354.92x = 9,539,635,396.49
  5. Step 5: Solve for x
    x = 9,539,635,396.49/87,354.92
  6. Step 6: Final answer
    x = 109,205.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.